Modul comunicatie pentru automat programabil (PLC) SIMATIC S7-1500, CM PTP RS422/485 HF, 24VDC, conexiune seriala, protocol RS422 si RS485, Freeport, 3964® si MODBUS RTU Master, Slave, 115200 Kbit/s, conector D-Sub 15 pini, 6ES7541-1AB00-0AB0, Siemens